Now-a-days cellphone is the best communication tool for commmunication.But to make a call We have to bare some cost to it, inordre to make it free of cost I am sugessting u a procedure Just follow it with some restrictions
1) per day only 4 calls are permitted with single number(source or destination)
if u attempted to do 5th call in a day it will show "daily maximum reached"
2)call duration for each call is 3mins 53 secs
3)This method works in India mostly between 5:30PM-9:30pm
